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Finding the Fourth Proportional to 125,698.82, 173,459.94 and 69,109.76

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Solution

The fourth proportional to 125,698.82, 173,459.94 and 69,109.76 is: 95,369.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,698.82 : 173,459.94 = 69,109.76 : x
  2. Step 2: Convert to fraction form
    125,698.82/173,459.94 = 69,109.76/x
  3. Step 3: Cross multiply
    125,698.82x = 173,459.94 × 69,109.76
  4. Step 4: Simplify right side
    125,698.82x = 11,987,774,823.01
  5. Step 5: Solve for x
    x = 11,987,774,823.01/125,698.82
  6. Step 6: Final answer
    x = 95,369.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.